/*
 * Copyright 2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package be.free.ts.support.validation;

import be.free.ts.support.Interval;
import org.joda.time.DateTime;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

/**
 * @author Christophe De Blende
 * @since 30/12/12
 */

public class IntervalValidator implements ConstraintValidator<ValidInterval, Interval> {

	@Override
	public void initialize(ValidInterval constraintAnnotation) {

	}

	@Override
	public boolean isValid(Interval value, ConstraintValidatorContext context) {
		if (value == null) {
			return true;
		}
		DateTime startDateTime = value.getStartDateTime();
		DateTime endDateTime = value.getEndDateTime();
		return startDateTime == null || endDateTime == null || startDateTime.isBefore(endDateTime);

	}
}
